Playpen



FIG. 1 is a perspective view of a playpen showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side view thereof; and

FIG. 4 is a bottom view thereof.

Only one side of the playpen is shown in the subject drawings. All four sides of the playpen of the subject invention are essentially identical. 

The ornamental design for a playpen, as shown and described. 